<ion-header>
  <ion-toolbar>
    <ion-buttons slot="start" (click)="gotohome()">
      <ion-icon name="arrow-back"></ion-icon>
    </ion-buttons>
    <ion-title>modal</ion-title>
  </ion-toolbar>
</ion-header>

<ion-content padding>
   <ion-button expand="block" (click)="presentModal()">
      Show Modal
   </ion-button>
</ion-content>
